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From: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: "Andreas Färber" <afaerber-l3A5Bk7waGM@public.gmane.org>
Cc: Neil Armstrong
	<narmstrong-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>,
	khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org,
	linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	devicetree <devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH 0/2] spi: meson: Add Amlogic GXBB compatible
Date: Fri, 16 Sep 2016 10:28:38 -0500	[thread overview]
Message-ID: <20160916152838.GA6795@rob-hp-laptop> (raw)
In-Reply-To: <4a199a95-3ee6-a3a0-bc8a-63bd0912e7d2-l3A5Bk7waGM@public.gmane.org>

On Thu, Sep 08, 2016 at 02:50:37PM +0200, Andreas Färber wrote:
> Am 08.09.2016 um 14:04 schrieb Andreas Färber:
> > Am 08.09.2016 um 09:53 schrieb Neil Armstrong:
> >> This patchset adds a specific compatible string in the Meson SPIFC driver for
> >> the Amlogic Meson GXBB SoC.
> > 
> > Any particular reason? We could just reuse the meson6 one since there
> > appear to be no code changes so far.
> 
> So Neil is essentially telling me they don't know whether there are any
> differences in the IP block, so a separate compatible string was chosen.
> 
> No objection from my side, but a general clarification from device tree
> maintainers when and when not to would be appreciated. (+ devicetree)

New chip, always define a new compatible. If you think they are the same 
or are close enough to function with the existing driver, then put both 
compatible strings in the DT.

Rob
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  parent reply	other threads:[~2016-09-16 15:28 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1473321206-32284-1-git-send-email-narmstrong@baylibre.com>
2016-09-08  7:53 ` [PATCH 1/2] dt-bindings: spi-meson: Add GXBB Compatible string Neil Armstrong
2016-09-12 19:07   ` Mark Brown
     [not found]   ` <1473321206-32284-2-git-send-email-narmstrong-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
2016-09-16 15:33     ` Rob Herring
     [not found] ` <293061a8-e867-4d91-20cb-6e5df8e9b543@suse.de>
2016-09-08 12:50   ` [PATCH 0/2] spi: meson: Add Amlogic GXBB compatible Andreas Färber
     [not found]     ` <4a199a95-3ee6-a3a0-bc8a-63bd0912e7d2-l3A5Bk7waGM@public.gmane.org>
2016-09-08 13:21       ` Ben Dooks
2016-09-16 15:28       ` Rob Herring [this message]
2016-09-08 18:17     ` Kevin Hilman

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